No. Even if you turn off everything googlish (dns fallback etc.) in Vivaldi, it still contacts google on a regular basis:
GET /service/update2/crx?os=linux&arch=x64&os_arch=x86_64&nacl_arch=x86-64&prod=chromiumcrx&prodchannel=&prodversion=75.0.3770.102&lang=de&acceptformat=crx2,crx3&x=id%3Dpkedcjkdefgpdelpbcmbmeomcjbeemfm%26v%3D7519.422.0.3%26installedby%3Dother%26uc HTTP/1.1
Host: clients2.google.com
Connection: close
X-Goog-Update-Interactivity: bg
X-Goog-Update-AppId: pkedcjkdefgpdelpbcmbmeomcjbeemfm
X-Goog-Update-Updater: chromiumcrx-75.0.3770.102
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.102 Safari/537.36 Vivaldi/2.6.1566.44
Accept-Encoding: gzip, deflate
Accept-Language: de-DE,de;q=0.9,en-US;q=0.8,en;q=0.7
POST /service/update2/json?cup2key=9:3380626489&cup2hreq=d8eda87c5d063a393974f4da760d8c5a8ecf2e239cb07189e98fdedf91f8d8cf HTTP/1.1
Host: update.googleapis.com
Connection: close
Content-Length: 2733
X-Goog-Update-AppId: gcmjkmgdlgnkkcocmoeiminaijmmjnii,hfnkpimlhhgieaddgfemjhofmfblmnib,ojjgnpkioondelmggbekfhllhdaimnho,llkgjffcdpffmhiakmfcdcblohccpfmo,khaoiebndkojlmppeemjhbpbandiljpe,giekcmmlnklenlaomppkphknjmnnpneh,aemomkdncapdnfajjbbcbdebjljbpmpj,copjbmjbojbakpaedmpkhmiplmmehfck
X-Goog-Update-Interactivity: bg
X-Goog-Update-Updater: chrome-75.0.3770.102
Content-Type: application/json
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.102 Safari/537.36 Vivaldi/2.6.1566.44
Accept-Encoding: gzip, deflate
{ârequestâ:{"@os":âlinuxâ,"@updater":âchromeâ,âacceptformatâ:âcrx2,crx3â,âappâ:[{âappidâ:âgcmjkmgdlgnkkcocmoeiminaijmmjniiâ,âcohortâ:â1:bm1:â,
âcohorthintâ:âM54ToM99â,âenabledâ:true,âpackagesâ:{âpackageâ:[{âfpâ:â1.d2c5ef6972360a7006d320139d300bc3586faee6ee368ddc33f9895aa40a9482â}]},
âpingâ:{âping_freshnessâ:"{ee2a63cc-9193-47db-ad38-d8372bf480ce}",ârdâ:4573},âupdatecheckâ:{},âversionâ:â9.3â},
{âappidâ:âhfnkpimlhhgieaddgfemjhofmfblmnibâ,âcohortâ:â1:jcl:â,âcohorthintâ:âAutoâ,âenabledâ:true,
âpackagesâ:{âpackageâ:[{âfpâ:â1.e11bc0afe8505e7ae8163f688b68520c86d984965cc663297dc2a087c31a2870â}]},
âpingâ:{âping_freshnessâ:"{e2821468-f3f5-4ecd-8fe2-74dcf4fdae64}",ârdâ:4573},âupdatecheckâ:{},âversionâ:â5265â},
{âappidâ:âojjgnpkioondelmggbekfhllhdaimnhoâ,âcohortâ:â1:0:â,âcohorthintâ:âAutoâ,âenabledâ:true,
âpackagesâ:{âpackageâ:[{âfpâ:â1.c7cd775d0bb1a20e82a416f0582a344f1efea0253c489296b7a7587f4fb2287bâ}]},
âpingâ:{âping_freshnessâ:"{018d0dc9-67a9-491e-83ca-59b26cb219ec}",ârdâ:4573},âupdatecheckâ:{},âversionâ:â1178â},
{âappidâ:âllkgjffcdpffmhiakmfcdcblohccpfmoâ,âenabledâ:true,âpingâ:{âping_freshnessâ:"{39c798bf-a328-4c9c-9c9a-96a5522a23da}",ârdâ:4573},
âupdatecheckâ:{},âversionâ:â0.0.0.0â},{âappidâ:âkhaoiebndkojlmppeemjhbpbandiljpeâ,âcohortâ:â1:cux:â,âcohorthintâ:âAutoâ,âenabledâ:true,
âpackagesâ:{âpackageâ:[{âfpâ:â1.e3988a5f7196d9449ecb413816736558862c665e5f742d5fe3761907de838414â}]},
âpingâ:{âping_freshnessâ:"{5147cd6c-83c1-4b23-b959-5103981758f6}",ârdâ:4573},âupdatecheckâ:{},âversionâ:â36â},
{âappidâ:âgiekcmmlnklenlaomppkphknjmnnpnehâ,âcohortâ:â1:j5l:â,âcohorthintâ:âAutoâ,âenabledâ:true,
âpackagesâ:{âpackageâ:[{âfpâ:â1.3eb16d6c28b502ac4cfee8f4a148df05f4d93229fa36a71db8b08d06329ff18aâ}]},
âpingâ:{âping_freshnessâ:"{94a3b879-5904-427d-9102-dbd9ae55b463}",ârdâ:4573},âupdatecheckâ:{},âversionâ:â7â},
{âappidâ:âaemomkdncapdnfajjbbcbdebjljbpmpjâ,âenabledâ:true,âpackagesâ:{âpackageâ:[{âfpâ:â1.65717b0144bfb0bd193f8ce31bf0dd7c95ff6d5844f2bc0c742974c1ccf889aeâ}]},
âpingâ:{âping_freshnessâ:"{608f6c7d-8fe2-42cf-b407-20afa5ea38af}",ârdâ:4573},âupdatecheckâ:{},âversionâ:â1.0.5.0â},
{âappidâ:âcopjbmjbojbakpaedmpkhmiplmmehfckâ,âcohortâ:â1:p1x:â,âcohorthintâ:âAutoâ,âenabledâ:true,
âpackagesâ:{âpackageâ:[{âfpâ:â1.207921137eee9c0831e0bd890330986c10dfd9382034491b82de3f86ae6915f7â}]},
âpingâ:{âping_freshnessâ:"{ab3402ab-10e4-49e6-8c11-484fc455c355}",ârdâ:4573},âupdatecheckâ:{},âversionâ:â2018.9.6.0â}],âarchâ:âx64â,âdedupâ:âcrâ,
âhwâ:{âphysmemoryâ:4},âlangâ:âdeâ,ânacl_archâ:âx86-64â,âosâ:{âarchâ:âx86_64â,âplatformâ:âLinuxâ,âversionâ:â4.19.0-kali5-amd64â},
âprodversionâ:â75.0.3770.102â,âprotocolâ:â3.1â,ârequestidâ:"{0796aee0-6db3-4f59-9130-2a26196e41e3}",
âsessionidâ:"{37591d9e-1760-4958-8f10-764f4790d760}","